Registering device for duplicating machines



March 20, 1934. E, JAQB$EN 1,951,757

REGISTERING DEVICE FOR DUPLICATING MACHINES Filed Feb. 'r, 1933 s Sheets-Sheet 1 NVENTUR March 20, 1934. E, JACQBSEN 1,951,757

REGISTERING DEVICE FOR DUPLICATING MACHINES Filed Feb. 7, 1935 3 Sheets-Sheet 2 N f k E I /3 1| "K (NVENTUH March 20, 1934. E. JACOBSEN REGISTERING DEVICE FOR DUPLICATING MACHINES Filed Feb. 7, 1933 3 Sheets-Sheet 3 will HIM

INVENTUR Patented Mar. 20, 1934.

REGISTERING DEVICE FOR DUPLICATING MACHIN Edwin Jacobson, Los Angeles, Calif.

Application February 7,

1933, Serial No. 655,640

3 Claims. (01. 101118) My invention relates to registering devices that are secured to the drum or printing element.

The primary object of my invention is to provide a registering device that will not vary throughout the life of the machine.

A further object of my invention is to provide a drum for duplicating'machines that will permit the printing to be raised or lowered on the sheets of paper without changing the stencil.

With these and incidental objects in view, the invention consists in certain novel features of .construction and combination of parts, the essen- ,tial elements of which are set forth in the appended claims, and a preferred embodiment of which is hereinafter shown with reference to the drawings which accompany and form apart of this specification.

1n the drawings:

Fig. 1 is an end elevation of a duplicating machine.

Fig. 2 is a side elevation of the drum removed from the machine.

,Fig. 3 is a fragmentary cross sectional view of the feed board, paper, gripper and registering band.

Fig. 4 is a cross sectional view taken on line AA, Fig. 2 looking in the direction indicated.

Fig. 5 is a cross sectional view taken on line B-'-B, Fig. 2 looking in the direction indicated together with a fragmentary portion of the frame and several coactive parts.

Fig. 6 is a plan view of the gripper removed from the drum.

Fig. 7 is a front elevation of the gripper taken on the line CC, Fig. 6.

Fig. 8 is a plan view of the registering band removed from the drum.

Fig. 9 is a front elevation of the registering band taken on line D-D, Fig. 8.

Fig. 10 is a fragmentary end view of the drum showing the mechanism for raising and lowering the print.

Like reference characters refer to like parts throughout the several views.

The frame (1) of the machine rests upon the feet (2), the drum (3), is journalled in the frame and is rotated by means of the crank (4). The impression roll (5) is used in a conventional manner.

The drum consists of a cylinder (6), which has the drum ends (7) pressed in each end which are held in place by the tie bolt (8). The hollow tube (9), passes through and is freely journalled in the drum ends (7), having the levers (l0) and (11) secured to its outer ends. The bushings (12) are disposed in each end of the tube (9) which form bearings for the shaft (13), which carries the shrouds (14) and (15). These shrouds are securely fastened to the shaft (13), by the pins (16). The shroud (15), is secured to the drum end (7) by the screw (17) and the nut (18). A slotted quadrant (19) is secured to the drum end (7), and is gripped between the nut (18) and the shroud (15) by the action of the screw (17). Hence it may be seen that the quadrant may be gripped at any desired point along the slot (20), thus changing the relative posi tion of the shrouds (l4) and (15) to the drum end ('7) and the cylinder (9). This action will raise or lower the printing matter on the paper which will be explained in detail hereafter. The levers (10) and (11) have slots (21), to receive the female member of the gripper (22). This gripper member consists of a thin piece of spring stock having a number of flared chaimels (23) disposed at intervals along the gripper member (22). The outer end of the gripper member has the stop blocks (24) secured thereto. The arm (11) is made of spring stock and may be deflected in the direction of the arm (10) at will. When this is done the gripper member (22) may be placed in the slots (21) and when the arm (11) is released, the blocks (24) partially arrest the motion of the spring arm (11) consequently the gripper member is held taut and in a pisition as shown in Fig. 2.

Referring to Fig. 5 the direction of rotation of the drum is clockwise. The arms (10) and (11) may be freely moved through the relieved portion of the shrouds which is about 90.'

The rotation of the drum is con- 1 member and when the drum has travelled about and has the upturned elements (30) which hold 5 the paper tight against the flared channel (23) as shown in Fig. 3. It may also be seen that at this time the cam (31) has also: arrived, contacting the stop (27) causing it to swing on its axis (32), releasing the arm (10), allowing the grip per, registering band and paper to be carried into the impression roll.

When the impression roll has firmly gripped the paper against the drum, the pin (33) strikes the lever (34), causing the lever (35) to swing upon its axis (36). The end of the lever (35) contacts the arm (10) causing it to move forward and thereby separate the gripper from the registering band, This also releases the sheet of paperwhich is separated from the drum 'by the'register'ing band (28), thus obviating the necessity of strippers. The lever (35) is returned to the stop,pi.n (37) by the spring (38). The lever (34) is held against the stop pin (39) thespringteo). =This lever only operates when the drum is turned backwards, allowing the pin (33) top l es.

The stationary bracket (41) and the spring bracket (42) are for holding-i,theregisteripghand (28) and are secured to the shrouds 1 4 and 15. The feed board (43) has a shroud (44) ,bothha-v- .ingslots (45), for the flared channels (23),.to pass through. [It may be seen that whenlthe channel is stopped as shown in Fig. 3 that the paper (29) cannot 'miss the channels of 1 the gripper.

While the form Iofl mechanism herein shown and described is admirably adapted tofulfill the objects primarily stated, it is to be understood that it is not intended to confine the inventor to the one form of embodiment herein shown and described, as it is susceptible of embodiment in various forms, all coming within the scope of the claims which follow.

What I claim is:

1. A drum for duplicating machines consisting of a cylinder, a drum end disposed at each end of the cylinder, a tube freely journalled in the drum ends, a pair of arms for a paper gripper secured .to the tube, ajemale member ofthe paper gripper disposed at theputer en d ofthe arms, a shaft freely journalled 'withinthe tube, a shroud securedto each end of the shaft, means for holding ,the shrouds firmly to the cylinder at various predetermined points, a male member of the paper ,gripper seeuredjo; the shrouds, a movable stop for ,ar-resting the motion of the gripper arms, a cam for releasing the gripper arms, a stop for the gripper arms aflixed to the drum and means for returning;the gripper arms to its last mentioned stop.

- 2. In combination with a paper gripper consisting of, a male and ,female member, .fiaid female membenhfaving' aj multip1i(;ity, of flared channels secured thereto, ,a shrouded feed board having .slots forsaid flared channels to pass through.

' gripper em risin a ,cna e e fem member, a male member havinga multiplicity of upturned elements f or vi/edging paper in the channel ,ofjsaid lfemalej member.

EDWIN JACOBVSEN- 

